BIRMINGHAM, Ala. - Authorities say a disgruntled employee killed a nursing supervisor and wounded another medical worker before killing himself inside a hospital in Birmingham, Alabama.

Police say 63-year-old nurse manager Nancy Swift was shot to death at UAB Highlands Wednesday night. The say another hospital employee also was shot but survived. Authorities described the shooter as a disgruntled employee who opened fire before turning the gun on himself.

Police didn't release the names of the wounded person or the suspected gunman.

UAB Highlands is a campus of UAB Hospital, which is part of the medical school at the University of Alabama at Birmingham.

Officials say the hospital has metal detectors that were in use, but they didn't explain how the shooter entered the building with a gun.